The power system consists of a mechanical fuel pump, carburetor, air filter and connecting pipelines. Together with the power system, various devices for adjusting the composition of exhaust gases work. This applies especially to vehicles with a catalytic converter, which, among other things, are equipped with: an exhaust gas return valve, a mixture ratio control switch, an air intake valve, a lambda probe, an idle speed increase switch and other elements for the best control of exhaust toxicity.
The fuel pump is driven by an eccentric on one of the camshafts. The pump lever rests on the eccentric and thereby moves in and out, thus creating pressure. Fuel is sucked from the tank through a replaceable filter. There is a float in the tank, which serves as a fuel level sensor for the gauge on the instrument panel. All engines are equipped with a falling-draught carburetor, which has two chambers and is equipped with an automatic starter. A throttle damper is installed, which prevents sudden closing of the damper. The device for opening the throttle valve of the second chamber is actuated by vacuum. Calibration data for the carburetor are given in Specifications at the beginning of the chapter.